Finding the Fourth Proportional to 1,184,502.29, 1,634,608.35 and 640,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184,502.29 : 1,634,608.35 = 640,638.72 : x
2. Step 2: Convert to fraction form
   1,184,502.29/1,634,608.35 = 640,638.72/x
3. Step 3: Cross multiply
   1,184,502.29x = 1,634,608.35 × 640,638.72
4. Step 4: Simplify right side
   1,184,502.29x = 1,047,193,401,045.31
5. Step 5: Solve for x
   x = 1,047,193,401,045.31/1,184,502.29
6. Step 6: Final answer
   x = 884,078.84